answer:As far as I knpw its about the underlying thechonogy, bluetooth is one kind, creating more of a very local network between to devices with added security , while The 2.4ghz operate on standard radio waves.. I am by no means an expert on these things, so this is just the things I have been told. Also with the .24.ghz I dont belive it have anything to do with a wi-fi signal, other than the one for the sender used with the device.